Class 348/703 - Hue or saturation detector

Subclass of Class 348 - Television
Definition: Subject matter including a specific circuitry to select
No. of patents: 23
Last issue date: 06/03/2008

Number	Title	Issue Date
7382415	Color correction processing circuit by each hue The object of the present invention is to provide a color correction process designed for enabling all the hues in the image properly corrected without leaving any uncorrected range; the inputted image data represented by the combination of 3 color signals is divide...	06/03/2008
7193659	Method and apparatus for compensating for chrominance saturation A method of color saturation compensation in a video signal is disclosed. The method includes the steps of: processing a luminance signal component of the video signal; determining whether the processing of the luminance signal results in a change in chrominance sat...	03/20/2007
7102695	Adaptive contrast and brightness enhancement with color preservation A method and apparatus for selectively enhancing contrast depending on the level of incoming video signals while preserving colors are provided. An apparatus for enhancing the contrast and brightness of a video signal displayed on a display device includes: a first ...	09/05/2006
7016540	Method and system for segmentation, classification, and summarization of video images In a technique for video segmentation, classification and summarization based on the singular value decomposition, frames of the input video sequence are represented by vectors composed of concatenated histograms descriptive of the spatial distributions of colors wi...	03/21/2006
6903782	System and method for performing segmentation-based enhancements of a video image There is disclosed an apparatus for performing segmentation-based enhancements of a video image. The apparatus comprises: 1) an input buffer for storing video frames of an incoming video signal; 2) a segmentation controller capable of segmenting a first stored frame...	06/07/2005
6867816	Method and device to display an index of teletext pages A teletext program includes several teletext pages, with each teletext page being broadcast in the form of a set of data packets. A method for displaying a teletext program index on a television receiver screen includes receiving a teletext page which includes the s...	03/15/2005
6816200	Method and apparatus for detecting camera sensor intensity saturation A method for detecting intensity saturation of a light sensor includes monitoring an electrical signal from a light sensor for detecting an intensity saturation condition of at least one pixel of the light sensor, converting the electrical signal to a digital signal...	11/09/2004
6266000	Programmable LED driver pad A light emitting diode (LED) driver pad comprising a multiplying digital to analog converter (MDAC), which allows for differing LED characteristics to be matched digitally. Either a plurality of MDACs are integrated onto a single integrated circuit, one M...	07/24/2001
6064447	Pure red color detection circuit and color compensation circuit using the same Red color saturation is increased and red color with higher purity can be reproduced by composing: a red color detection circuit 1 for detecting a red color signal having higher purity by inputting color differential signals (R-Y) and (B-Y) modulated by c...	05/16/2000
5502482	Derivation of studio camera position and motion from the camera image Studio camera position and motion may be derived from the camera image by separating out the background and deriving from a background having a number of areas of hue and/or brightness different from adjacent areas estimates of movement from one image to ...	03/26/1996
5488670	Color image processing method and apparatus A color image processing apparatus is disclosed in which a color image signal is separated into lightness data and chromaticity data, and if it is decided that a block includes an edge and the lightness data and chromaticity data of the block have a stron...	01/30/1996
5452017	Method and apparatus for electronic image color modification using hue and saturation levels The color modification system receives standard red, green and blue signal values and outputs modified red, green and blue values in accordance with operator modification of the signals. To increase processing speed and minimize the amount of required mem...	09/19/1995
5144420	Color image processing apparatus that multiplies color difference signals by generated coefficients to achieve saturation control without changing color phase Image processing apparatus with a color saturation controller for processing a color image signal to be printed derives color difference signals from an incoming color image signal, detects a minimum difference value between an allowable dynamic range of ...	09/01/1992
4970583	Combined video processing circuit and image enhancer A circuit for splitting a video signal into a chroma signal and a luminance signal comprises a resistor and a bandpass filter connected to the resistor. The bandpass filter passes a frequency component at the frequency of the color pilot burst. A chroma s...	11/13/1990
4962417	Chroma overload detector using a differential amplifier In a color television receiver having first and second chroma amplifiers, a chroma overload detector uses a differential amplifier for peak detection of a chrominance signal over a predetermined threshold level, and in response thereto, for generating a c...	10/09/1990
4633299	Color temperature control circuit using saturation level detector A color television receiver is disclosed, which includes a circuit for detecting a color saturation level of a color from red, green and blue primary color signals or from color difference signals and a color temperature control circuit for increasing at ...	12/30/1986
4327374	Flesh correction circuit for a color television receiver A flesh correction circuit for a color television receiver includes a reference flesh signal generator for generating a signal corresponding to flesh tone, a flesh signal detector for detecting a flesh signal of a carrier chrominance signal, a carrier chr...	04/27/1982
4276560	Color signal reproducing system and circuit for the same In a color signal reproducing circuit, a red color difference signal from a color demodulator circuit is corrected by a blue color difference signal, and the blue color difference signal is corrected by a luminance signal. The phase of a color subcarrier ...	06/30/1981
4183046	Electronic apparatus for converting digital image or graphics data to color video display formats and method therefor A digital video color signal generation system for converting image or graphics data into a color video display format transforms source image or graphics data into a single data word comprising three separate groups of data bits which define the video di...	01/08/1980
4106055	Automatic color level control system with threshold tracking A DC controlled amplifier is used to control the chrominance gain, and hence the color saturation, of a television receiver. The voltage on the wiper of a Color Control variable resistor and the output of an Automatic Color Level (ACL) detector are combin...	08/08/1978
4101927	VIR control apparatus for color television receiver Color television receiving apparatus is provided for receiving a composite television signal which includes horizontal synchronizing signals, color burst signals and luminance and chrominance components. The composite color television signal is of the typ...	07/18/1978
4047202	Automatic color balancing system A system for regulating the color balance of a television signal by storing hue values only during periods when a predetermined luminosity gradient is present in the picture while, simultaneously, the picture remains below a predetermined color saturation...	09/06/1977
3950780	VIR chroma system A reference signal contained in the vertical blanking interval of the transmitted television signal is used in the color television receiver for automatic hue and saturation control. This vertical interval reference (VIR) signal includes a chrominance ref...	04/13/1976

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Class 348/703 - Hue or saturation detector